Abstracts of North American Geology / 
US Department of the Interior Geological Survey. 
 - Washington  :  S. n.,  1966-. 
 - v. :  ill. 
 - Unknown. 
 - Description based :1966- 
 = Abstracts of North American Geology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ամսագիր<br/>Geology --Bibliography--North America <br/>Mineralogy --Bibliography--North America